Re: Did Commodore cheat with the quad density floppies?

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Fri, 4 Jan 2019 13:15:19 +0100 Message-ID: <509050aa-afe1-3963-2cbb-0233ea135b03@laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 1/4/19 12:22 PM, silverdr@wfmh.org.pl wrote:
> 
> Do you remember how the analogue section was solved there? All discrete or something like in 1541-II?

The read amp seems to be an MC3470 in 18pin DIP. Not sure what they use 
for the write circuit, but there is a MC3346 next to the read amp which 
is a 'General purpose Transistor Array One Differentially connected Pair 
and three isolated Transistor Arrays'. Probably that plus some analogue 
tricks.

  Gerrit